ACS Maindrive Integrated Step-down Headset

ACS Maindrive Integrated Step-down Headset

Marsoni

M251S

$41.00

Get it in 3 business days with 1 day shipping. Friday, May 29

ACS Maindrive Integrated Step-down HeadsetACS Maindrive integrated step down (AKA Reducer) headsets will suit mini to expert sized frames with an integrated 1 1 8" headtube and work with forks with a 1" steerer tube. Featuring an aluminum cap, bearing cover and crown race with super smooth rolling, precision 4545 bearings. Suitable for 1 1 8" integrated (41. 8mm) frames with 1" forks Crown Race: 26 S. H. I. S Lower: IS42 S. H. I. S Upper: IS42 S. H. I. S. Stem Clamp Diameter: 25. 4 Threadless

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Your ACS Maindrive Integrated Step-down Headset orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
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Bought this kit for the AOO because I didn't want to buy the original size in case it didnt work or my baby has a reaction to it. I have to say the AOO worked like magic for my 7 week old who had baby acne, eczema and small cradle cap. Put it on overnight, the next morning the redness had calmed down by a lot. 72 hours into using the AOO and it had cleared my baby's skin issues. Now my baby is back to his soft smooth skin! A little goes a long ways. And this product is worth every penny! My only regret is that I shouldve gotten this sooner!

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Reviewed in the United States on February 17, 2026

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Emily Potemri

Pawtucket, US

★★★★★ 5

The BEST baby bath products

Scent: Fragrance-Free, Size: Hair Duo, Scent: Fragrance-Free, Size: Hair Duo

THE BEST bath products for my baby boy! They smell amazing but they’re also made with cleaner ingredients so I know what’s going onto my baby boy’s head is actually working!

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Reviewed in the United States on November 11, 2025

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Molly P

Charlottesville, US

★★★★★ 5

Get It

Scent: Fragrance-Free, Size: Hair Duo

Unscented and gentle on my child's hair. I love it. It leaves his hair soft and clean. I like that it comes in bigger containers, so I get a lot of 'Bang' for my buck.

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Reviewed in the United States on March 3, 2026

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Jen

Charlottesville, US

★★★★★ 5

We love Tubby Todd!

Scent: Lavender Rosemary, Size: Hair Duo

Tubby Todd has been our go-to since day 1 with our kids! Love the clean ingredients.

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Reviewed in the United States on May 22, 2026

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TESSA F

Omaha, US

★★★★★ 5

Absolute best for child and money

Scent: Lavender Rosemary, Size: Hair Duo

Perfect for my kids with sensitive skin. Does not dry out skin and hair like regular store bought baby/child products. They have eczema prone skin and Keratosis Pilaris and it hydrates better than others labeled for sensitive skin. Fragrance is clean and not overbearing. Also great for curly frizz prone hair. Not painful if it gets in eyes unlike others that claim tear free.

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Reviewed in the United States on February 9, 2026